CA2317829A1 - Method of and an apparatus for enhancing the braking efficiency of a railway freight train consist - Google Patents

Method of and an apparatus for enhancing the braking efficiency of a railway freight train consist Download PDF

Info

Publication number
CA2317829A1
CA2317829A1 CA002317829A CA2317829A CA2317829A1 CA 2317829 A1 CA2317829 A1 CA 2317829A1 CA 002317829 A CA002317829 A CA 002317829A CA 2317829 A CA2317829 A CA 2317829A CA 2317829 A1 CA2317829 A1 CA 2317829A1
Authority
CA
Canada
Prior art keywords
train consist
pressure
freight
brake cylinders
freight train
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002317829A
Other languages
French (fr)
Other versions
CA2317829C (en
Inventor
Michael E. Ring
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Publication of CA2317829A1 publication Critical patent/CA2317829A1/en
Application granted granted Critical
Publication of CA2317829C publication Critical patent/CA2317829C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1893—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution especially adapted for railway vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/665—Electrical control in fluid-pressure brake systems the systems being specially adapted for transferring two or more command signals, e.g. railway systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
    • B60T8/266—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

A method of substantially achieving a minimum stopping distance of a freight train consist without incurring any significant detrimental wheel slide comprising the steps of preprogramming preselected information into a computer disposed on a freight locomotive and determining a speed of such freight train consist. Then communicating a signal that is indicative of said speed determined to such computer disposed on such freight locomotive. Determining in such computer a pressure that can be applied to brake cylinders which will maintain substantially maximum adhesion between wheels being braked and rail surfaces in contact with such wheels and communicating a signal representative of such pressure determined to a pressure control valve in fluid communication with such brake cylinders and, thereafter, maintaining a maximum pressure on such brake cylinders that will stop such train consist in a shortest possible distance while simultaneously substantially preventing wheel slide.
CA002317829A 1999-09-20 2000-09-08 Method of and an apparatus for enhancing the braking efficiency of a railway freight train consist Expired - Fee Related CA2317829C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US399,412 1999-09-20
US09/399,412 US20030200020A1 (en) 1999-09-20 1999-09-20 Method of and an apparatus for enhancing the braking efficiency of a railway freight train consist

Publications (2)

Publication Number Publication Date
CA2317829A1 true CA2317829A1 (en) 2001-03-20
CA2317829C CA2317829C (en) 2005-02-15

Family

ID=23579411

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002317829A Expired - Fee Related CA2317829C (en) 1999-09-20 2000-09-08 Method of and an apparatus for enhancing the braking efficiency of a railway freight train consist

Country Status (4)

Country Link
US (1) US20030200020A1 (en)
EP (1) EP1084922A3 (en)
CA (1) CA2317829C (en)
MX (1) MXPA00009230A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0718148B1 (en) * 2006-10-06 2019-01-22 New York Air Brake Corp locomotive controller
US7765859B2 (en) * 2008-04-14 2010-08-03 Wabtec Holding Corp. Method and system for determining brake shoe effectiveness
DE102011113093A1 (en) * 2011-09-09 2013-03-14 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Brake effect determination for a rail vehicle
US8924117B2 (en) 2012-05-04 2014-12-30 Wabtec Holding Corp. Brake monitoring system for an air brake arrangement
US9020667B2 (en) 2012-06-11 2015-04-28 Wabtec Holding Corp. Empty-load device feedback arrangement
IT201800005948A1 (en) * 2018-06-01 2019-12-01 Braking management procedure in a condition of degraded adhesion for a train.
CN112793553B (en) * 2021-01-28 2023-06-27 中铁四局集团第五工程有限公司 Brake prevention system and control method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2140919A5 (en) * 1971-06-11 1973-01-19 Westinghouse Freins & Signaux
JPS55110648A (en) * 1979-02-16 1980-08-26 Hitachi Ltd Skid control device by use of microcomputer
CH648795A5 (en) * 1979-12-20 1985-04-15 Oerlikon Buehrle Ag Anti-slip device for rail vehicles
US4402047A (en) * 1980-12-16 1983-08-30 General Signal Corporation Computerized brake control system
US4783127A (en) * 1985-10-21 1988-11-08 General Motors Corporation Anti-lock brake control system

Also Published As

Publication number Publication date
EP1084922A3 (en) 2003-07-23
MXPA00009230A (en) 2002-08-20
EP1084922A2 (en) 2001-03-21
US20030200020A1 (en) 2003-10-23
CA2317829C (en) 2005-02-15

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EEER Examination request
MKLA Lapsed